.vc-checkerboard {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-image: linear-gradient(
                  45deg, rgb(204, 204, 204) 26%, transparent 26%), linear-gradient(
                  -45deg, rgb(204, 204, 204) 26%, transparent 26%), linear-gradient(
                  45deg, transparent 73%, rgb(204, 204, 204) 73%), linear-gradient(
                  -45deg, transparent 73%, rgb(204, 204, 204) 73%);
  background-size: 6px 6px;
  background-position: 0 0, 0 3px, 3px -3px, -3px 0;
}